Study on optimization of soot blowing based on monitoring model of coal-fired power station soot accumulation

摘要

In view of the present unreasonable situation about the blowing way of boiler heating surface, an optimized model of soot blowing was established to improve the economic benefit of the unit, after weighing the improvement of boiler efficiency and steam loss caused by ash blowing and ensuring the safe operation of the unit. The measured data of thermal power plant DCS system and the basic thermodynamic calculation data was adopted, and the contamination rate of heating surface was calculated in real time. The fitted curve was taken by taking the expected data from multiple data sets at the same measuring point from the statistical point of view, combining the optimization model of the heating surface to solve the optimal soot blowing cycle in the boiler economizer of 300 MW coal-fired power plant, which was taken as the research object.